Gather the ServiceWorker client information in the browser process.

content/browser/service_worker/service_worker_provider_host.cc

Index: content/browser/service_worker/service_worker_provider_host.cc
diff --git a/content/browser/service_worker/service_worker_provider_host.cc b/content/browser/service_worker/service_worker_provider_host.cc
index c5f9b16ef4a6d94b5beac935992e2af8a2e0875f..9d63ab3da35e84b465ba1759be8663e89e880930 100644
--- a/content/browser/service_worker/service_worker_provider_host.cc
+++ b/content/browser/service_worker/service_worker_provider_host.cc
@@ -5,6 +5,7 @@
 #include "content/browser/service_worker/service_worker_provider_host.h"
 
 #include "base/stl_util.h"
+#include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_request_handler.h"
@@ -43,6 +44,32 @@ void FocusOnUIThread(int render_process_id,
                           base::Bind(callback, result));
 }
 
+void GetClientInfoOnUIThread(
+    int render_process_id,
+    int render_frame_id,
+    const ServiceWorkerProviderHost::GetClientInfoCallback& callback) {
+  RenderFrameHostImpl* render_frame_host =
+      RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
+  if (!render_frame_host) {
+    BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+                            base::Bind(callback, ServiceWorkerClientInfo()));
+    return;
+  }
+
+  // TODO(mlamouri,michaeln): it is possible to end up collecting information
+  // for a frame that is actually being navigated and isn't exactly what we are
+  // expecting.
+  ServiceWorkerClientInfo client_info(
+      render_frame_host->GetVisibilityState(),
+      render_frame_host->IsFocused(),
+      render_frame_host->GetLastCommittedURL(),
+      render_frame_host->GetParent() ? REQUEST_CONTEXT_FRAME_TYPE_NESTED
+                                     : REQUEST_CONTEXT_FRAME_TYPE_TOP_LEVEL);
+
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+                          base::Bind(callback, client_info));
+}
+
 }  // anonymous namespace
 
 ServiceWorkerProviderHost::ServiceWorkerProviderHost(
@@ -270,10 +297,12 @@ void ServiceWorkerProviderHost::Focus(const FocusCallback& callback) {
 }
 
 void ServiceWorkerProviderHost::GetClientInfo(
-    int embedded_worker_id,
-    int request_id) {
-  Send(new ServiceWorkerMsg_GetClientInfo(
-      kDocumentMainThreadId, embedded_worker_id, request_id, provider_id()));
+    const GetClientInfoCallback& callback) {
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                          base::Bind(&GetClientInfoOnUIThread,
+                                     render_process_id_,
+                                     render_frame_id_,
+                                     callback));
 }
 
 void ServiceWorkerProviderHost::AddScopedProcessReferenceToPattern(